【摘要】 通过煅烧法合成g-C3N4纳米片并在其表面负载Bi4MoO9纳米粒子（NPs）,制备了Bi4MoO9/g-C3N4（BMC）异质结光催化剂.采用TEM、SEM、DRS、PL等方法对BMC样品进行表征.以磺胺二甲基嘧啶（SMT）为目标降解物,考察BMC的光催化性能.结果表明,BMC-50（Bi4MoO9质量分数为50.0%）的光催化活性最高.BMC-50投加量为0.5 g·L^-1时,SMT溶液在光照180 min后降解率可达94.0%,是单一Bi₄MoO₉降解能力的17.7倍.复合材料中Bi4MoO9与g-C3N4间异质结构的构建降低了电子-空穴对的复合,提高了光催化性能.更多还原

【Abstract】 g-C₃N₄nanosheets are synthesized by polymerization method and loaded with Bi₄MoO₉nanoparticles（NPs）on its surface to prepare Bi₄MoO₉/g-C₃N₄（BMC）heterostructure catalyst.BMC samples are characterized by TEM,SEM,DRS and PL.The photocatalytic performance of BMC is investigated with sulfadiazine（SMT）as the target degradation material.The results show that the photocatalytic activity of BMC-50（50.0%Bi₄MoO₉）is the highest.When the concentration of BMC-50 is 0.5 g·L^-1,SMT could degrade 94.0%within 180 min,which is 17.7 times of the degradation capacity of Bi₄MoO₉.The fabrication of the heterostructure between Bi₄MoO₉and g-C₃N₄reduces the recombination of electron-hole pairs and enhances the photocatalytic performance.更多还原